Identification of Multimodal Dynamic Characteristics of a Decurrent Tree with Application to a Model-Scale Wind Tunnel Study

Wind tunnel tests of scaled model trees provide an effective approach for understanding fluctuating wind loading and wind-induced response trees. For decurrent trees, vague multimodal dynamic characteristics ineffective estimation leaf mass are two the main obstacles to developing aeroelastic models. In this study, tree identified by field measurements finite element models (FEM). It was found that number branches swaying in phase determines magnitude fraction branch modes. The frequencies modes with larger were considered as a reference model. addition, estimate without destruction developed comparing trunk frequency between FEM. Based on these prototype, scaled, constructed assessed. mismatch stiffness prototype leads streamlining damping them. Vogel exponent associated provides possible way ensure consistency prototype.